Adjustable gage for planing



(No Model.)

W. H. STINSON.

ADJUSTABLE GGB FOR PLANING.

No. 256,864. `Patented.Apr.25,1882.

` UNITED STATES PATENT OFFICE WILLIAM H. STINSON, OF SGANDIA, KANSAS;

AD JUSTABLE GAGE FOR PLANING.

SPCIFICATION forming part of Letters Patent No. 256,864, datecl April 25, 18832I I Application filed January 7, 1882. (No model.)

To all whom t may concer'n:

Be it known that I, WILLIAM H. STINsoN, a citizenofthe United States, residing at Seandia, in the county of Republic and State of Kansas, have invented certain new and useful Improvements in Adjustable Dado-Guides, of which the following is a specification, reference being had therein to the accompanying drawings, in which- Figure lis a plan view. of my iinproved gage for planes in cutting oblique or straight mortises or bevels. Fig. 2 is a front view thereof. Fig. 3 is a sectional view taken on line l 1 of Fig. 1. Fig. 4 is a sect-ional view taken on line 2 2 of Fig. 1. Fig. 5is a sectional view taken on line 3 3 of Fig. l. Fig. 6 is a sectional view taken or. line et 4 of Fig. 2, and Fig. 7 is a detailed view of the gage D D'.

The object of niy invention is to enable, while permitting the adjustment of the device to accommodate thelength or thickness of the material operated on, the setting at the desired angle and guidingof the plane in forming the groove in the material; and to this end it consists in the combination and arrangement of mechanism, substantially as hereinafter niore fully set forth.

In carrying out my inventi'on I employ a base piece or board, A, having a stop, a, extending along its rear edge, for the material to rest against to hold it straight.

B is a guide fixed to the base-piece A at one end, and consistiug prcferably -of a bottom piece, b, arranged under the basepiece, und having'aflixed to it, at one. end, a plate, b', bent or formed with a dowmvard-projecting portiou, D2, of two side pieces, D3, and of a hinged top piece, D4. The downward-projecting portion D2 of the plate b', in connection with the plate c, having a similar projection, of, and secured to a cross-piece, 02, attached to the other end of the base-piece A, upon its under side, both projections being arranged at the front side of the base-piece, serves to hold the base piece upon thebench orsupport as against rearward orlateral movement. The top piece, D4, is hinged to a plate, d, capable of Vertical, adjustment by slots d' and screws 012, passing through said slots and enterin g one side of the guide B. At the other side of the guide B is arranged a similar plate, ds, also capable of Vertical adjustment by means of slots d4 and screws e25, passing through the slots and entering the side of the guide. This arrangement permits the accommodation of the guide to material of differentthicknesses. The lifting end of the top piece, b4,'has a latch or lever, e, adapted to engage with aI catch or hook, e', formed on the plate (13, by gravity as the top closes.

B' is a clamp, capable of adjustment upon the guide B, it having a slot, f, and a set-screw, and provided with a fiange,f2, fitting on an edge of the guide B, to guide it in its adjustment, and a downward-projecting arm, fg, which effects the holding of the material-a doorjamb, window-jamb, or.other piece of workagainst the stop a, at the rear edge.

O is the sliding gage placed on the other end of the base-piece A, and' having its bottom piece, g, recessed to receive the base-piece, and provided with plates or fianges g' upon its upper surface, one arranged on each side. of the base-piece, and having their fianges testing upon the base-piece to perinit the gagc to slide thereon.

h is a set-screw for holding the gagc at the desired point'of adjustment, as the length of the' stuff' to be mortised or groovcd may require. The gage is provided with a pointer or index, which 'is adapted to indicate the point of adjustment required upon a grad uated bar or Scale, z, fastened to the front side of the base-piece A.

j is a thumb-piece working in the gage, and having affixed to it, under the top of the gage,

a clamp, j', to secure that end of the stuffI against the stop a of the base-piece A.

O' is the top plate of the gage, having downward-projecting side pieces or flanges, C2, fitting against the sides of the bottom piece of the gage, and provided with slots lc, through which pass set-serews 7a' to permit the adjustment of the gage to acconimodate the thickness of the stuff.

D is also a guide or fcnce, which has affixed to it a plate, D', pivoted to a leaf, E, of the gage O, and provided with a segmental slot, l, which receives a set-screw, l', the purpose. of which is to permit the adjustnient of the IOO guide D, according as it is desired to cut a straight or oblique groove or gain in the stuff.

F is a toothed lever pivoted to. the leaf E, and having its' tooth m adapted to enter a slot, m', in the convex edge of the segmental plate D', to control the adjustmentof the gage O' to readily insure accuracy in cutting grooves or gains in different pieces. The leaf E has a slot, n, which receives a set-screw, nl, to enable the adjustment of the guide D centrally With the material being operatedl on. The leaf is graduated, as is also its adjoining plate, D2, screvved or fastened to the gage O, to effect the ready and accurate adjustment of the gage in inehes or feet. The lever F is disengaged from the plate D/ when a greater detlection from a right line of the guide D is required than it is capable of having when the leveris engaged with said plate.

This device is particularly adapted for use with the dado-plane to cut gains transversely or obliquely. It is used as follows: The materiai or stuff to be operated on being secured in position, as above described, the guide D is adjusted to conform to the angle it is required to give to the intended mortise, and the plane is adjnsted against the guide D and the operation of cutting the mortise perforrned, the guide serving to guide the plane in its movement.

It will be observed that the transverse gain to be cut near the upper end ot' the jamb and the oblique gain to be cutat the lower end of thejamb are both made before removing the 3 5 jamb, the base being of sut'ficient length to accommodate a door-jamb.

By means of this device the laying out by marking off the stuff of the intended gain is avoided, while the angle of the gain is rea'dily determined and preserved, thus insuring accuraey and faoility ot' operation and its adap tation to use by an unskilled workman.

Having thus fully described my invention, I claiin and desire to secure by Letters Patent 1. The guide B, having a hinged top piece,

easea L4, provided with a hingc-plate capable of 'vertical ad justincnt in combinationwith the basepiece A, snbstantially as and for the p'urpose set forth.

2. The guide B, combined with thebase-piece A a, and 'having the adjustable clamp B', provided with a doivnwardprojecting arm, f3, substantially as and for the purpose set forth.

3. The guide having the adjustable ola-mp provided with a doivnWard-projecting arm, and combined with a base-piece having the stop a at its rear side, substantially as deseribed.

4. The slidin g gage O, combined With abasepiece, A, and having the vertically-adjustable top-piece, C', and an adjustable plane-guide, substantially as and for the purpose set forth.

5. The combination of the angularly-adjustable guide D, having its segmental plate D' provided in its convexity with a slot, with the toothed lever F, the adjustable and graduated leaf E, and graduated plate D2, snbstantially as and for the purpose set forth. y

6. The guide having the adjustable clamp provided With a Vertical arm, the hinged top, i

the vertically-adjustable plates, one having a hook or catch, the gravity-locking latch or lever, and the plate having the downward-projecting tlange, combined with a base-piece having a stop at -its rear edge, substantially as and for the purpose set forth.

7. The sliding gage having the flanges resting upon its support, the holding-screw, the

`pointer or index, the clamp, the graduated and in presence of two witnesses.

WILLIAM H. STINSON. Witnesses:

WILL G. KING, ALBERT D. MARBLE. 

